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arXiv 0906.2817hep-th
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Zeta函数与Casimir能量

Zeta Functions and the Casimir Energy

Steven K. Blau, Matt Visser, Andreas Wipf

摘要:

我们使用zeta函数技术给出了一个有限的定义的Casimir能量的任意超静态时空有或没有边界。我们发现Casimir能量与单圈有效能量密切相关,但不完全相同。我们表明,在一般的Casimir能量依赖于一个归一化尺度。这一现象与QCD袋模型中Casimir能量的应用有关。在Kaluza-Klein理论的框架内,我们讨论了类Casimir效应对诱导宇宙常数和牛顿常数的单圈修正。我们可以计算出这些常数对紧致维数半径的依赖关系,而不必进行详细的计算。

英文摘要:

We use zeta function techniques to give a finite definition for the Casimir energy of an arbitrary ultrastatic spacetime with or without boundaries. We find that the Casimir energy is intimately related to, but not identical to, the one-loop effective energy. We show that in general the Casimir energy depends on a normalization scale. This phenomenon has relevance to applications of the Casimir energy in bag models of QCD. Within the framework of Kaluza-Klein theories we discuss the one-loop corrections to the induced cosmological and Newton constants in terms of a Casimir like effect. We can calculate the dependence of these constants on the radius of the compact dimensions, without having to resort to detailed calculations.

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